Compare 839 vs 851
| Property | 839 | 851 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 8391 | 231 × 371 |
| Prime factorization | 839 | 23 × 37 |
| Divisors count | 2 | 4 |
| Divisors | 1, 839 | 1, 23, 37, 851 |
| Number of properties | 4 | 1 |
| Chen primes | 100th | |
| Isolated primes | 81st | |
| Primes | 146th | |
| Safe primes | 22nd | |
| Semiprimes | 257th | |
| Roman numberals | DCCCXXXIX | DCCCLI |
| Base 2 | 11010001112 | 11010100112 |
| Base 3 | 10110023 | 10111123 |
| Base 4 | 310134 | 311034 |
| Base 5 | 113245 | 114015 |
| Base 6 | 35156 | 35356 |
| Base 7 | 23067 | 23247 |
| Base 8 | 15078 | 15238 |
| Base 9 | 11329 | 11459 |
| Base 10 | 83910 | 85110 |
| Base 11 | 6a311 | 70411 |
| Base 12 | 59b12 | 5ab12 |
| Base 13 | 4c713 | 50613 |
| Base 14 | 43d14 | 44b14 |
| Base 15 | 3ae15 | 3bb15 |
| Base 16 | 34716 | 35316 |